Machine for upsetting wheel-tires.



No. 771,050. EPATENTED SEPT. 27, 1904.

' E L. F. FAIRBANKS.

- MACHINE FOR UPSETTING WHEEL TIRES..

APPLICATION IILEDMAY 14. 1903.

N0 MODEL. 4 SHEETS-SHEET 1.

No. 771,050. PATENTED SEPT. 27, 1904;

E L. F. FAIRBANKS.

MACHINE FOR UPSETTING WHEEL TIRES.

APPLICATION FILED MAY 14. 1903. N0 MODEL.

4 SHEETS-SHEET 3.

No. 771,050. PATENTED SEPT. 27, 1904. L. F. FAIRBANKS. MACHINE FOR UPSETTING WHEEL TIRES.

APPLIGATION FILED MAY 14, 1903. N0 MODEL. 4 SHEETSSHEET 4,

r w J a. QMMA UNITED STATES Patented September 27, 1904.

PATENT OFFICE.

LEONARD F. FAIRBANKS, OF HOPKINTON, MASSACHUSETTS.

SPECIFICATION formingpart of Letters Patent No. 771,050, dated September 27, 1904.

Application filed May 14, 1903.

To all whom it may concern:

Be it known that I, LEONARD F. FAIRBANKS, of Hopkinton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Upsetting Wheel-Tires, of which the following is a specification.

This invention relates to machines for upsetting wheel-tires of the type shown in Letters Patent of the United States N 0. 554,484,

granted to me February 11, 1896. The machine shown in said patent comprises a fixed bed or anvil having a concave tire-supporting surface,- a fixed guide located over the anvil, a movable tire-supportingubed adapted to be moved toward and from the anvil, a movable guide located over said movable bed, dogs engaged with the two guides and Vertically movable therein, and cams adapted to force said dogs downwardly into engagement with a tire supported by said anvil and bed, and means for. operating said cams, means being provided for moving the movable bed and the guide and dog cooperating therewith toward the fixed anvil, so that the portion of the tire interposed between the two dogs may be longitudinally compressed by forcing the movable bed toward the fixed anvil and at the same time hammering the intermediate portion of the tire upon the anvil to take up undulations produced in the tire, all as described in said patent.

My present invention has for its object to provide improved means for operating said dogs, to the end that they may be held positively in any position to which they may be adjusted, and, further, to the end that the machine as a whole may be simplified and rendered more efficient.

p The invention consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents an end elevation of a tire-upsetting machine embodying my improvements. Fig. 2 represents a front elevation of the same. Fig. 3 represents an enlargement of a portion of Fig. 2 with a part removed. Fig. 4 represents a Serial No. 157,097. (No model.)

section on line 4 4 of Fig. 2. Figs. 5 and 6 represent perspective views hereinafter referred to. Figs. 7 and 8 represent, respectively, an end and a front elevation of a different embodiment of my invention. Fig. 9 represents a section on line 9 9 of Fig. 8. Fig. 10 represents a section on'line 1O 10 of Fig. 9.

The same letters of reference indicate the same parts in all the figures.

In the drawings, and referring for the present to Figs. 1 to 6, inclusive, (0 represents a supporting base or standard the upper end of which is formed as an anvil Z), the acting face or surface of which is preferably slightly concave. 0 represents a vertical standard which is formed on or afiixed to the anvil 6 and extends upwardly a considerable distance above the same, said standard being provided with an offset guide or projection c, which extends over one end of the anvil, the said guide being separated from the anvil by a narrow slot or space 0 of more than sufiicient width to receive the thickness of the tire. (Z represents a dog which is vertically and laterally movable in the guide 0 and is adapted to cooperate with the anvil in graspingthetire. Saiddogispivotallymounted upon the lower ends of links d d, which depend from and are pivoted to a slide (Z movable vertically in the guide 0', whereby a substantially universal flexible connection is secured. 613 represents an adjusting-screw, which is engaged with an internally-threaded bushing or nut d", afiixed to the guide 0, its lower end having a peripheral groove which receives the margin of an orifice (Z formed in the slide (Z The rotation of the screw (Z causes it to 'move endwise upwardly or downwardly, as the case may be, thus raising or depressing the slide (Z The lower end of the links cl are provided with trunnions 03, which enter sockets formed for their reception in the upper portions of the ends of the dog (Z, said upper portions having tapering recesses (Z Fig. 6, which permit the dog to tip on the trunnions d. A spring 6Z8 normally holds the dog at one side of the passage or channel of the guide 0, said spring having an extension cZ bearing against the upper end of said dog,

as shown in Fig. 3. It will be seen that the dog (Z is positively moved in both directions by the adj Listing-screw and is securely held by the latter at any position to which it may be adjusted, there being no liability of the displacement of the dog through any slipping of the adjusting device. 71. represents a lever pivoted at 71 to the upper end of the standard 0. Said lever projects downwardly and has at its lower end an ofl'sct portion if, the upper end of which constitutes an extension of the anvil 7). The lever it has also an offset guide 0", in which a dog cl" is vertically and laterally movable, said dog cooperating with the offset portion la of the lever A in grasping the interposed portion of the tire. The deg (F is adjusted vertically by an adjusting-screw (Z corresponding to the adjusting-screw (Z the screw (Z being connected with the dog (Z by means similar to those which connect the screw (Z with the dog (Z. 7' represents a short lever, which is pivoted at/ to the supporting-standard below the anvil and is connected by a rod or bar 7' with the portion 72/ of the lever 72/, said rod or bar extending through an opening formed in the standard a below the anvil 7/. On the lever is formed an arm having a socket j to receive an elongated operatinglever j.

The operation of the described machine is as follows: The portion of the tire t to be shortened or upset having been suitably heated, itis placed upon the anvil, the lever 71/ being moved away from the anvil, as indicated in Fig. 2. The dogs (l d are depressed by the adjustingscrews and firmly clamp the tire against the anvil and the offset portion if of the lever, respectively. he operator then grasping the operating-leverj exerts pressure in the direction required to move the deg (F toward the dog (Z, thus tending to bend or corrugate the interposed portion of the tire. The tire is continually hammered while this pressure is being applied, so that it is prevented from bending,the material displaced by the pressure being kept in the arc of the tire by the hammering operation, the result being a shortening of the tire without change of its curvature.

I desire to call especial attention to the fact that in my present device for the operation of the dogs (Z and (PI employ a novel mechanism consisting of a screw having, preferably, a quick-running thread, whereby through the medium of the slide (Z the links (Z, and the coacting dog (Z or d I am enabled to produce a device which will clamp quickly and let go easily, the dog or dogs clamping with the draw of the machine, which I have found in practice to greatly surpass prior devices wherein have been shown a cam carrying a clamping dog or dogs directly upon the work. The employment of the links instead of the direct pivoting of the dog upon the relatively fixed nut on the screw enables me to provide greater play for the dog or dogs and also allows of independent movement of the lower end of the dog, which it would not have if the dog were pivoted directly to the aforesaid nut.

In Figs. 7, 8, 9, and 10 I show a machine embodying my invention in which the tiregrasping dogs instead of being arranged to bear upon the inner side of the tire are arranged to bear upon one edge of the tire, the dogs being movable toward and from the edge of the tire instead of the side. In this embodiment of my invention the machine is provided with the fixed vertical standard 0, the lixcd grooved bed 6, the swing-lever 72/, and the olfset portion if, forming a movable extension of the bed 0, all as above described. The machine is also provided with means similar to those shown in Figs. 1 and 2 for moving the lever it and the movable bed toward and from the fixed bed. 0 represents a horizontal guide which is substituted for the fixed vertical guide 0. (Z represents a dog which is movable horizontally in said guide and is adapted to bear upon one edge of the tire t, as shown in Figs. 9 and 10. (Z represents a slide which is movable in the guide 0 and is connected by hooked lugs or couplings (Z (Z with the dog al the said couplings entering grooves cl in the dog 0 and fitting said grooves loosely, thus forming a flexible connection, so that the dogs can rock independently, as in the construction shown in Figs. 3, at, 5, and 6. (Z represents a horizontal adjusting-screw, engaged with a nut (Z affixed to the guide 0 the said adjusting-screw being engaged with the slide (Z in such manner that the rotation of the screw will move the slide back and forth in the guide 0 Between the inner end of the screw and the dog (Z is interposed a loose block d. The dog (Z is preferably composed of a series of independent sections 8 s, as shown in Fig. 9, the sections being placed side by side and all engaged in the manner above described with the couplings d. This sectional construction gives the dog ri a plurality of bearing edges adapted to bear simultaneously on the tire, each section being independent of the other, so that said bearing edges can adapt themselves to any undulations or irregularities in the surface of the tire on which they bear. The sections 8 .9, comprising the dog (Z are normally pressed in one direction by means of a spring (il (See Fig. 9.) The offset portion it of the lever 71/ has a horizontal guide 0 in which a dog (Z is horizontally movable, said dog being adapted to bear on the edge of the tire like the dog (.Z The dog (Z is adjusted horizontally by an adjusting-screw (Z corresponding to the adjusting-screw (Z the screw cZ" being connected with the dog (Z by means similar to those which connect the screw (Z with the dog 6 The dog cZ may also be made of independent sections .9.

I claim- 1. In a tire-upsetting machine, a guide, a nut located in said guide, an adjusting-screw mounted in said nut, a slide in engagement with said screw, a dog supported in said guide, and links having their upper ends pivotally attached to said slide and their lower ends detachably connected to said dog, combined with a spring exerting lateral tension on the lower portion of said dog.

2. In a tire-upsetting machine, a guide, a nut located in said guide, an adjusting-screw mounted in said nut, a slide in engagement with said screw, a dog loosely suspended from said slide by a pivotal support whereby its upper and lower portions have independent movement, and means exerting a lateral tension on the lower portion of the dog.

3. In a tire-upsetting machine, an anvil,

guides adjacent thereto, slides in said guides, links depending from said slides, dogs sup ported from said links, a spring bearing against a side of each dog, an adjusting-screw actuating each of said slides, and means for actuating said guides.

4. A. tire-upsetting machine comprising a bed or anvil, a guide adjacent to the anvil, a

slide movable in said guide, a tire-grasping dog composed of a plurality of independent sections side by side, means for connecting the sections with the slide and a dog-adjusting screw engaged with said slide.

In testimony whereof I have aifixed my signature in presence of two witnesses.

LEONARD F. FAIRBANKS. Witnesses:

GEORGE L. HEMENWAY, EDGAR A. BRIGGS. 

